- Cannot Install Os X El Capitan
- Cannot Install Os X El Capitan
- Can't Install El Capitan
- Install El Capitan Download
- Reinstall Os X El Capitan
“This copy of the Install OS X Mavericks application can’t be verified. It may have been corrupted or tampered with during downloading”
We use cookies to give you the best possible service. If you continue browsing, you agree to the use of cookies. Read more I accept. Cannot get the “el capitan” option in the drop down box Faiz Orz January 11, 2017 at 11:03 PM Reply For the VirtualBox, you don’t need a Unlocker because the options are already there. Sep 30, 2015 Install El Capitan. OK, now you can click that Continue button in the installer window. (If the installer isn’t running, go to your Applications folder and double click the Install OS X El. Install Watch Face Studio. You will see another message, “WatchFaceStudio.pkg cannot be opened because the developer cannot be verified.” Follow the steps in the section above. For more information, see Safely open apps on your Mac. Microsoft Windows® 10 or later (64-bit), Apple macOS® X 10.11 (El Capitan) or later (64-bit). Please watch version 2 of this video here: the 'install failed' and 'No packages were eligible for install'.
Cannot Install Os X El Capitan
The reason why this insane message is happening is because as of February 2016, the security certificates that validate these Mac OS X installs seems to have expired. What this means is that when you try to install Mac OS X Mavericks, Yosemite or El Capitan from any USB or external source, the certificate checking process will render your copy of the installer null and void. You will then get the error “This copy of the Install OS X Mavericks application can’t be verified. It may have been corrupted or tampered with during downloading.”
Thankfully, as annoying as this is, there’s a pretty easy fix in the Terminal, located on every installer of Mac OS X. Here’s what to do:
Cannot Install Os X El Capitan
- Boot into the OS X installer as you would normally do (hold down option at boot and choose your installer
- Disconnect the ethernet cable if it’s connected and turn off wi-fi from the networking menu
- Open the utilities menu item and choose “Terminal”
- When the Terminal appears, simply type in the following command: date 0202020216
- Hit return and you will now see the new date as read back by the system
- Quit the Terminal
- You can now begin to reinstall OS X from the main screen as you did before
Can't Install El Capitan
Install El Capitan Download
Why does this work in the Mac OS X Terminal?
The reason why this works is that you are actually turning your computer into a time machine–and you are telling it to go back to the date February 2nd, 2016. This tricks the certificate into believing that the date is now in the past and allows the installation to resume. You can also redownload any installers to get the new certificates, which are located in your purchase history on the Mac App Store. You would then have to make new installer disks with these new downloaded installers.